The FITS "World Coordinate System" (WCS) standard defines keywords and usage that provide for the description of astronomical coordinate systems in a FITS image header. ... I: "Representations of world coordinates in FITS" , Greisen, E.W. & Calabretta, M.R. (2002), Astronomy & Astrophysics , 395 , 1061-1075. ... This diagram illustrating Bonne's projection with conformal latitude +35 was produced by WCSLIB , a C implementation of the coordinate transformations defined in the FITS WCS papers. ...

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

The Equatorial Inertial (GEI) coordinate system: . The X GEI axis is directed to the point of the spring equinox, . The Z GEI axis is coincide with the Earth's rotation axis, . The Y GEI supplements the right three. The Geographic (GEO) coordinate system: . ... The Solar Magnetic (SM) coordinate system: . ... About space physics coordinate transformation see Russel [1971] and Hapgood [1992] . ... M.A. Hapgood , Space physics coordinate transformations: A user guide // Planet Space Sci. ...

... AstroCC is a coordinate conversion utility for astronomy. It accepts an object designation or the coordinates of an object and calculates coordinates in alternative systems, and at different dates, times, and locations. It also provides lunar and bright planet coordinates to aid in planning observations. ... BJD values may also be retrieved from http://astroutils.astronomy.ohio-state.edu/time/utc2bjd.html which is based on Eastman et al. ... Coordinate data are obtained from SIMBAD. ...

... Coordinate system . It is necessary to specify the coordinate system for the drilling of plug-plates so that the drilling file (currently named plPlugMap), plate drilling, cartridge, rotator wrap and the rotator itself are compatible. ... The TCC rotator angle (object system) is defined to be 0 degrees for this orientation. ... Thus, the rotator angle gives the conventional astronomical position angle on the sky of the y axis (although Russell won't acknowledge this necessarily). ...

spaceweb@oulu.fi - last update: 21 December 1998, 1400 UT (RR) . ... This is not as trivial a question as one might think, since it is not enough to know the location with respect to the Earth and/or the Sun in some arbitrary coordinate system. One may have to consider things like differences between the solar equatorial plane and the Earth's orbital plane, the changing direction of Earth's spin axis during the year, and the magnetic dipole orientation. ... Geocentric solar ecliptic . ...

... DIGITAL EDITIONS . ... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Compelling contrast . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine ...

UNIVERSAL COORDINATES TRANSFORMER . EPOCH1: . EQUATORIAL COORDINATES FOR EPOCH1 . ... rad . ... EPOCH2: . EQUATORIAL COORDINATES FOR EPOCH2: . ... ECLIPTIC COORDINATES FOR EPOCH1 . ... ECLIPTIC COORDINATES FOR EPOCH2 . ... GALACTIC COORDINATES . ... Type initial epoch (epoch1), final epoch (epoch2) and needed coodinates (equatorial a 1 , d 1 for epoch1, ecliptic l 1 , b 1 for epoch1 or galactic l,b) and press corresponding "SUBMIT" (if EPOCH2=EPOCH1, EPOCH2=EPOCH1+10). ...

... The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image projections. ... They were CRPIX n for the reference pixel location on pixel axis n , CRVAL n for the coordinate value at that pixel, CDELT n for the increment at that pixel in the coordinate value, and CTYPE n for the type of coordinate. ...

. Back to Handbook . Графики перехора из экваториальной системы координат в галактические (l2,b2), и наоборот по расчету программы ad_lb (DOS).

... Explanations. Each row contains at 0h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds), hour difference of declination (seconds), apparent radius (minutes, seconds), equation of time (hours, minutes, seconds), hour difference of equation of time (seconds), time of upper culmination of Sun (hours, minutes, seconds), change in moment of upper culmination when longitude changes on 1 hour to west (seconds). ...

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UPDATE - June 1, 2007 . ... A successfull MERLIN proposal for "Co-ordinated studies of the solar minimum solar wind" has been advanced by Andy Breen (PI, with the participation of G. Dorrian, R. Fallows, G. Poletto, M. Bisi, P. Thomasson, R. Beswick): this means that scintillation measurements will be made on 12, 14, 15 and 17 May, 2007. ... 2007/05/12 . ... MERLIN . ... 0323+055 . ... EISCAT/ESR/MERLIN . ... 0321+123 . ... EISCAT/MERLIN . ...

Results of analysis . ... IAA EOP Service . ... EOP series are regularly submitted to the IERS, and also are available at the IAA EOP Service page. EPN coordinate time series . EUREF Permanent GPS Network (EPN) coordinate time series is computed from analysis of available EUREF weekly solutions. ... Second solution is based on independent combination of individual EPN Analysis Centers' solutions . ... USNO GPS Timing Operations . ... GPS Time Series . ... EPN : European Permanent GPS Network . ...

On the problem of using of the ICRF radio coordinates reference system Lipovka A.A. (1), Lipovka N.M. (1) Center of research for physics, Sonora State University e-mail: nila_lip@mail.ru Bibliography 1. ... Columns 8, 9 are corrections to right ascension and declination, which should be added to coordinates of ICRF2 radio sources, to obtain coordinates of optical objects, with which these radio sources are identified. ... Lipovka .. ... Fig 3 Fig 3 ...

Stellarium 0.12.3 . ... VertexP3T2 Struct Reference . Vertex with a 3D position and a 2D texture coordinate. ... VertexP3T2 (const Vec3f &position, const Vec2f texCoord) . Construct from a 3D position and 2D texture coordinate. ... VertexP3T2 (const Vec2f pos, const Vec2f texCoord) . Construct from a 2D position, setting the z coord to 0, and 2D texture coordinate. ... VERTEX_ATTRIBUTES ( Vec3f Position , Vec2f TexCoord) . ... position . ... VertexP3T2::VertexP3T2 . ... const Vec2f љ . ...

... Дно кастрюли с трехслойным напылением, легкое, но очень прочное, могут применяться в посудомоечной машине. ... Артикул: ZH3005 Цвет: стальной Состав: нержавеющая сталь Описание: утолщенное дно. ... Цвет: белый . ... Бюстгальтер Infinity Lingerie. ... Характеристики: Материал: стеклоОбъем: 0.2 лДиаметр: 8.3 смВысота: 11.5 см . ... Цвет фасада: дуб белфорт . Цвет корпуса: венге цаво . Материал фасада: ДСП . Материал корпуса: ДСП . Тип поверхности фасада: матовый . ...

SAI VO . ... Web Services . Catalog Access Services . ... SAI Web Services . ... This service aims to automatically match stars in FITS image provided with catalogue and add the correct WCS keywords to its FITS header. ... Service Web Interface . ... The service is available here To use it, you has to provide the image as a Base64-encoded string, along with the rough information on image field of view size and center (the latter may be deduced from FITS header keywords like 'RA' and 'DEC'). ...

function [l,b, mul , mub ]=equ2gal(ra,de, mura , mude ); %% % % Calculating galactic coordinates and % proper motion components: % Transformation: Equatorial ---- Galactic % Epoch and equinix J2000 % % Function call: [l,b, mul , mub ]=equ2gal(ra,de, mura , mude ) % % % Input: ra, de - eequatorial coordinates (in degrees) % mura , mude - proper motion components % in the equatorial ...

Peremennye Zvezdy", . ... Star Name: . NSV 14523, USNO-B1.0 0964-0599429 . ... The variable star NSV 14523 was discovered by Pinto Romano (1973) who gave very rough coordinates but published a finding chart. ... Pinto Romano believed the star to be a peculiar object: though they derived a period of 0.48176 days, the light curve from a small number of photographs demonstrated a large scatter and discrepancies. ... Pinto, G., Romano, G., 1973, Memor. ... Light Curve . ...